723
CDUS41 KOKX 212031
CLIISP
CLIMATE REPORT
NATIONAL WEATHER SERVICE NEW YORK, NY
431 PM EDT SUN SEP 21 2025
...............................
..THE ISLIP NY CLIMATE SUMMARY FOR SEPTEMBER 21 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1963 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 71 105 PM 84 1980 73 -2 73
MINIMUM 54 551 AM 43 1973 57 -3 63
1991
AVERAGE 63 65 -2 68
PRECIPITATION (IN)
TODAY 0.00 2.16 1966 0.13 -0.13 0.00
MONTH TO DATE 1.24 2.49 -1.25 0.06
SINCE SEP 1 1.24 2.49 -1.25 0.06
SINCE JAN 1 25.02 32.79 -7.77 38.93
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 2 2 0 0
MONTH TO DATE 4 20 -16 5
SINCE SEP 1 4 20 -16 5
SINCE JUL 1 4 23 -19 6
COOLING
TODAY 0 2 -2 3
MONTH TO DATE 86 92 -6 71
SINCE SEP 1 86 92 -6 71
SINCE JAN 1 1014 856 158 992
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 500 AM
LOWEST 43 1200 PM
AVERAGE 67
......................................................
THE ISLIP NY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 1980
MINIMUM TEMPERATURE (F) 57 38 1997
SUNRISE AND SUNSET
SEPTEMBER 21 2025.....SUNRISE 639 AM EDT SUNSET 651 PM EDT
SEPTEMBER 22 2025.....SUNRISE 640 AM EDT SUNSET 649 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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